Michael Williamson, MD
NPI 1831180421 · Cardiovascular Disease Physician · Clearwater, FL
Michael Williamson, MD is a Cardiovascular Disease Physician provider in Clearwater, FL (NPI 1831180421).
Provider details
- NPI number
- 1831180421
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME31396 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-02
- Last updated
- 2012-10-26
Frequently asked questions
- What is Michael Williamson's NPI number?
- Michael Williamson's National Provider Identifier (NPI) is 1831180421, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Williamson's specialty?
- Michael Williamson is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Williamson located?
- Michael Williamson's practice location on file with NPPES is 455 Pinellas St, Clearwater, FL 33756-3354.
- What is Michael Williamson's phone number?
- The practice phone number listed in the NPPES registry for Michael Williamson is (727) 445-1911.
- Is Michael Williamson's NPI active?
- Yes — Michael Williamson's NPI (1831180421) is active in the NPPES registry as of the last update on 2012-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.